disallow vs give off

disallow

verb
  • To reject as invalid, untrue, or improper 

  • to overrule a colonial legislation by the sovereign-in-privy council 

  • To refuse to allow 

give off

verb
  • To emit; to produce and send forth; to come across in some manner. 

How often have the words disallow and give off occurred in a corpus of books? (source: Google Ngram Viewer )